# 8.1
def display_message():
    print("What's your name?")
display_message()
def favorite_book(book):
    print("One of my favorite books is " + book)
favorite_book("Alice in Wonderland")
# 8.2
def make_shirt(size,write="I love Python"):
    print("Your size is "+size+".")
    print("Your T-shirt writes "+write+".")
make_shirt('L')
make_shirt('M')
make_shirt('S','Top')
def  describe_city(name,country="China"):
    print(name.title()+" is in "+country)
describe_city("wuhan")
describe_city("hunan")
describe_city("new york","America")
